Vacuum apparatus.



E. P. NOYBS. VACUUM AlPARATUS. APPLICATION FILED Nov. 29, 1907.

Patented Dec. 27, 1910.

avance.

supplying the motor with its owi combus- -To all whom 'it my was, Toc.P.- POWER cemPANY, or

JERSEY.

Be it known that I, Enwinii)V P. NoYEs, a citizen ,of the United States,residing at Winchester, in the county of Middlesex Vand State ofMassachusetts, have invented -certa-in newand useful Improvements inVacuum Apparatus, of which the following is a specification.

This invention relates to means for controlling and for utilizing thelmechanical pumping suction of an Vinternal-combustion motor, such as anexplosion motor. In connection with such a motor suitable means arepreferably provided whereby the diier ence iniuid pressure created bythe suction of the pistoni-or equivalent element in tion fluid isapplied -to the performance of machanical work other than that of merecharge-formation. Thus 'I' ani enabled to enhance the usefulness ofthese motors by Vapplying them directly to the production of vacuums forindustrial purposes without the intervention of a separate vacuum pumpdriven by the motor.

My present invention is especially concerned with the throttle-controlof one or more supply passages tov a motor of this type, and in carryingout the invention with the common type of explosion motor, fer to*extend its suction conduit or, pipe, generally the air pipe, to thedesired'point of use anterior to the inotor with respect to thedirection of fluid fiow in said pipe and there equip said pipe with thenecessary dev vices for mechanically applying the vacuum.

These devices may be of any known or suitable type for utilizing theelastic fluid 'flow flue to the vacuum, or for utilizing ,the differencein pressure between atmosphere and the suction pressure'createdby themotor. Specifically, the vacuum-using apparatus may, as hereinaftershown, consist of means for gathering dust from external objects such asthe interiors of buildings, with a suitable strainer for-separating thedust -from the 4motor air-current on which -it is borne.

IVhen the combustible-charge-forming des .vice of the motor consists ofa liquid-fuel mixer or'carbureter operated by the passage of theair-current, I have found it desirable to effect certain changes in theconstruction I pretogether EDWARD P; Norris; 0E WmcHEsrEm-AssAcPiUsErrs, A ss'IGNoE, Er ritratti:4 Assiett- NEWARK, NEW JERSEY, AcoEPoEATIoE-or vacuum APPARATUS.

specificati@ of retten Patent; Pafep'tedpec, 27,1910, '.Appiioaanaieameter 29,1907, serial No. 404,214.

cation.

Of the'accoinpanying drawings, Figure 1 represents an elevation, partlyin section, showing my invention in the form of an `automobile whosepropelling I'notor is dust from external objects. F ig. 2'represents asectional viewl of the carbureter. Fig. 3 represents a sectional view'.of the automatic air-inlet valve.' Fig. 4 represents a ertical sectionof one of the motor cyliners. v

10 is the frame of the vehicle and 11 is the propelling mot-or, hereshown as a twocylinder motor with an air-suction pipe 12 leadingvthrough a carbureter 13 and continuing as a combustible-mixture pipe 14branchin to the respective cylinders. The four-stro e cycle and the,two-stroke cycle are common types of explosion inotors to both of which-my invention applies, the dif- `ference as regards the application ofthe ina. dis lacer-chamber, usually the crankcham er, in the case of atwo-stroke motor. I have shown anV ordinary four-stroke cycle motor.

The suction-pipe 12 is shown as extended vanteriorly for the purpose ofapplying the motor suction to extraneous objectsand'controlling the'motor from a distance, and when' the extraneous objects aredust-particles or surfaces requiring to be cleaned of dust, theinlet-end of the suction-pipe is furnished with a dust-gathering tool 15of any suitable pattern, and with a iiexiblesection or hose 17 carryingsaid tool, sothat the tool may lbe moved about. The flexible hoseenables the tool 15 to reach places from which dust is to be gathered`I,and it also enables the motor to be` controlled from a shiftinglocality. A valve 1G in said air-pipe near the suction instrumentenables the air inlet to be shut oit' or regulated, and the motor itselfmay be throttled'and regulated with equipped to furnish a vacuum forcollecting Y vention, lying in the fact that the suctionpipe leadsintothe combustion-cylinder in the case of a four-stroke motor, and intoever is not claimed in the present applideterminate location w1th'respect to the motor the flexible section of the suction-pipe" maygenerally be dispensed with. The exv .tent of lthis pipe will dependVupon the prox;

of the suction-using device, and the partlcular character of said devicemay be varied according to the kind of work `to be performed. e

yA dust-strainer or separator of any suitable type is provided in thesuction-pipe be- .tween the hose 17 and the carbureter 13. I

have shown a strainer 21 composed of an outerfcasing and an inner porousremovable bag 22 for retaining the dust and permitting a purifiedcombustion-air current to goto the motor.

Modification of the usual carbureter arrangement in which the floatchamber is open to atmospheric pressure is here eected by substantiallysealing the float-chamber or reservoir 23 of the carbureter against theentrance of atmospheric air and leading an air-pressure duct 24 to saidchamber from a point in the suction pipe anterior to the fuel-mixingpoint. ence when the air-supply becomes more or less rare because of avar ing vacuum, the motive pressure on'the sur ace of the fuel inchamber 23 lvaries conformably, and a tendency is established toautomatically maintain fixed ratios of air and fuelin the combustiblemixture.

Ata suitable -point anterior to the carbureter, the suction-pipe 12 isrovided with abranch airinlet 26, contro lable at will, for use instarting the motor, in running the vehicle under 1ts own power,etc.,`and` there may be a two-wayv valve 25, with a suitable operatingdevice, for putting either the inlet 26 or the pipe 12 intocommunication with the carbureter, that is, for direct# ing the motorsuction at will either to the 1n ets 15 and 28 on the one hand, or tothe inlet 26 on the other hand. It will be seen that this valve is aswitching valve, controllin two ports reciprocally by one motion. do nothowever wholly conline vmyself to the use of a single valve forthisdirective function.

lThe valve 25 is able i to Alperform throttle regulation for' inlet 26.

second branch inlet 28 to the suctionpipe 12 is equip ed with anautomatic airpressure-operate mechanism 27 including a valve 29,a-piston 30, and a valve-closing rmanently-fixed or cipal springA`'()nits lower side the piston has 1 atmosphexc'pressure, andon itsupper side the suctlon pipe pressure plus that o 31', 1s'o that thevalve tendsto open w` 'en-'a :predetermined degree of vacuumis attained1n plpe 12.1 Hence if the flow through the dusttool 15 should'be internited by the closingof valve 16 or kinkin o thehose, the

motor would not be deprive of combustion air. The device 27 may alsobeadjusted to correct the surging in motor speed which might otherwise beobserved-because of the elasticity of a large body of air in thesuction-v ipe. Such surgiing is observed vrinf at .low spee undernearly-c osed thrott e. In order to make a relatively-high vacuumavailable at the nozzle 15, the spring of the .relief-'valve device 27is of course usually set so as not to allow the valve 29 to open until.vthe motor is well throttled ydown, in which case stallin of the motoris prevented. Up to Athat olnt the throttle va ves 16 and 25 are ab e tocontrol the motor rformance. This device, while greferab y used where astrong vacuum is esired, is not indispensable. My invention is ada tedto stationary as wellas ortable or ve ide-propelling motors, an 4may Aofcourse be varied 1n its constructional embodiment.

I claim,- v -1. Vacuum a paratus comprising an automatic interna-com'bustion motor having means for mechanically pumping itscombustion-air charge, an anteriorly-extended air-supply vpipe for saidmotor having f a a throttle valve in the movable portion of said pipe 2.acuum apparatus comprising an automovable portion carrying the 'airinlet, and e matic internal-combustion motor adapted' to mechanicallypump its combustion-air charge, an anterlorly-extendedair-suction pipehaving a plurality of suction inlets one of which is provided with meansfor applying the motor suction to the performance of external Work, andthrottle-valves for the respective inlets controllable at will.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses, the 26th day of November 1907.

' EDWARD P. NvoYEs. 4

Witnesses:

R. M. PmRsoN, G. W. HOPKINS.

